An FEM static analysis usually involves the following essential issues: structural geometry, real constant, material properties, connection type, support, and loads. Structural geometry: structural shape; Real constant: material properties such as area, moment of inertia and so on;. Material properties: density, Youngs Modulus, Poissons ratio and so on; Connection type: fixed joint or pinned connection; Support type: fixed, pinned, roller or free. Loads: force, displacement, acceleration etc. The following instruction shows how to establish an FEM model and then how to perform static analysis with SAP step by step. Here we just take it as an example to demonstrate the procedure of static analysis by SAP version 14 step by step.
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SAP V Guidelines for this subsystem are described as follows:. These models, also available in the Attachments section as a zipped file, are described as follows:. Any spring-mass system may represent the swinging pendulum in 2D. It is slightly more challenging to model a pendulum which is free to translate in 3D. In this case, a linear link is created to represent the pendulum device.
In Model 2, the link is drawn at the top story. Time-history analysis should be performed using either nonlinear modal FNA or direct-integration linear or nonlinear time-history load cases. These types of analyses correctly account for the coupling of the modes, an effect which may be caused by damping in the TMD device. If damping is small, it might be possible to obtain reasonable results using a linear modal time-history analysis, and possibly even response-spectrum analysis.
To provide overview for this procedure, the time-history load case of Model 2 is defined as follows:. All rights reserved. Powered by Atlassian. Page tree. Browse pages. A t tachments 8 Page History Scaffolding History. Copy with Scaffolding XML. Jira links. Created by Amelia , last modified by Ondrej on Mar 27, Name: Tuned-mass damper Description: An overview of the tuned-mass damper and guidelines for modeling the device.
Powered by Atlassian Confluence 6. An overview of the tuned-mass damper and guidelines for modeling the device.
SAP2000 Watch and Learn
Sap2000 V14 Step by Step Based on a Structure Model